Hollidaysburg, Pennsylvania. Central Bank of Pennsylvania. ND (18xx). $20. Gem Uncirculated. Proof.(PA-175 G12a) India paper on card. Imprint of Danforth, Wright & Co. Philad. & New York. Full red-brown lathe tints and border prints. TWENTY in left end panel. Native American male seated overlooking river at center. Ornate 20 die counter left of center, Roman numerals XX in die counter in top right corner. Portrait of Franklin Pierce at bottom right. Microlettered TWENTY repeating in signature panels with large red 20 counter at bottom center. This broadly margined and sharply printed proof is from the $10-$10-$10-$20 sheet seen in the 1990 ABNC sale. It was the only proof of the type in the sale and we believe it to be unique. A wonderfully appealing proof note that should be hotly sought after by collectors.